How to determine the oil content of alkyd resins

How to determine the oil content of alkyd resins

What is the best way of rapidly and reliably determining the oil content of an alkyd resin? 

The answer is simple infra-red spectroscopy may be used to determine not only the composition of an alkyd resin but also that of a blend with other binders and surface coating resins. The method will usually also provide information on the type of oil used. If there is a mixture of different alkyd resins however, things will become difficult. In that case one could perhaps try using thin-layer and gas chromatography.

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